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Subject: Re: [MTT devel] 500 Internal Server Error from open-mpi-mtt.appspot.com
From: Igor Ivanov (igor.ivanov_at_[hidden])
Date: 2010-02-12 01:42:26


Hi Ethan,

You got 500 Error because "The timeout exception handling" raised.
Full description looks as "This request used a high amount of CPU, and was roughly 1.9 times over the average request CPU limit. High CPU requests have a small quota, and if you exceed this quota, your app will be temporarily disabled."

There are set of limitations and quotas that exists in Google App Engine (http://code.google.com/appengine/docs/python/runtime.html#Responses).
You request matched one of them.


Common recommendation to avoid this issue:
1. use --no-raw (get data w/o zip archive), --no-ref (no references to other models(tables)), --no-limit (will try to get data by portion) options of bquery;
for example: --gqls="select * from TestRunPhase where status=1"  --no-raw --no-ref --no-limt
2. construct --gqls query more detail using additional condition in where clause;
note: "select * from TestRunPhase where status=1" query is trying to get ~ 90% all data stored in datastore.
3. active using 'tag' property allow to filter needed data;

Regards,
Igor



Ethan Mallove wrote:
Hi,

I'm getting a 500 Internal Server Error using bquery.pl.  I can --ping
successfully:

  $ client/bquery.pl --ping --server=http://open-mpi-mtt.appspot.com/ --password=xxxxx --username=sun 
  Ping is successful.

But an actual query gets an error:

  $ client/bquery.pl --server=http://open-mpi-mtt.appspot.com/ --password=xxxxx --username=sun --query --gqls="select * from TestRunPhase where status=1" --dir="bquery-test"
  Error at http://open-mpi-mtt.appspot.com//client
  500 Internal Server Error

-Ethan
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__________ Information from ESET NOD32 Antivirus, version of virus signature database 4859 (20100211) __________

The message was checked by ESET NOD32 Antivirus.

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